Yoshiaki Ishihara², *Taichi Kawamura¹, Ryuhei Yamada³, Kazunori Ogawa⁴, Nozomu Takeuchi⁵, Akito Araya⁵, Philippe Lognonné¹, Kei Shirai², Takeshi Tsuji⁶, Taizo Kobayashi⁷, Yasuhiro Nishikawa^1,5, Mélanie Drilleau¹, Satoshi Tanaka² (1.Institut de Physique du Globe de Paris, 2.Japan Aerospace Exploration Agency, 3.National Astronomical Observatory of Japan, 4.Kobe University, 5.Tokyo University, 6.Kyushu University, 7.University of Fukui)